Improvement of the WCIP convergence

Perturbation on the boundary conditions operator is investigated in order to improve the wave concept iterative procedure convergence. If they are well chosen, the reference impedance used in the waves definitions, the impedance of the metallic pixels and the internal source impedance allow a reduction in the number of iterations of a factor 3.2 at each frequency. These concepts are validated through comparison with results obtained with usual values used in previous studies.